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 Post subject: S13 coilovers into DR30 - kit
PostPosted: Fri Apr 04, 2014 2:25 pm 

Joined: Fri Apr 04, 2014 2:14 pm
Posts: 11
I know this has been covered a heap of times in the past but as I was building my DR30 into a race car here in Australia I wanted access to a wide range of coilovers. I had read about guys doing the S13 knuckles into the DR30 although with the usual bump steer issue on the front and the rear 2 bolt / 3 bolt pattern issue, as well as the rear coilovers having to be at full extension for a lower than standard ride height. All in all not ideal, so I set about designing a conversion kit, which I'm in the process of having the first one made for testing.

Originally I was going to replace the whole tie rod and end on the front, but the rules I am building my car to race in don't allow non production tie rods (so that idea was scrapped), so I designed a tie rod end that takes a motorsport spec spherical bearing - through which a tapered shank connects to the steering arm of the knuckle. A series of spacers then allows one to adjust the bump steer.

On the rear I have designed a simple 2 bolt to 3 bolt plate that bolts to the top of the coilover allowing you to use your existing 3 bolt pattern and not having to drill, and at the same time giving you an extra 30mm of droop travel, meaning you can set your coilovers up easily without any compromise.

I will be offering these kits for sale once I have them fully tested on my own car.

This was my original design:
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This is the new tie rod end - so no tie rod or rod end required.

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 Post subject: Re: S13 coilovers into DR30 - kit
PostPosted: Fri Apr 04, 2014 2:29 pm 

Joined: Fri Apr 04, 2014 2:14 pm
Posts: 11
And this is the rear spacer.

Image

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 Post subject: Re: S13 coilovers into DR30 - kit
PostPosted: Sat Apr 05, 2014 8:10 pm 

Joined: Mon Jun 03, 2013 4:41 am
Posts: 38
Location: Whyalla, South Australia
This looks interesting. I'll definitly keep an eye out cor your kit. :tu: :tu: :tu:


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 Post subject: Re: S13 coilovers into DR30 - kit
PostPosted: Sun Apr 06, 2014 9:23 am 

Joined: Mon Aug 06, 2012 4:54 am
Posts: 318
Location: Yokosuka, Japan
front def interests me as well. the rear is something i see a lot of others wanting, but i already drilled my rears for s13 tops lol


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 Post subject: Re: S13 coilovers into DR30 - kit
PostPosted: Sat Apr 19, 2014 2:09 am 

Joined: Fri Jun 17, 2011 9:39 pm
Posts: 5
Those pieces are interesting! If that front tie rod end design works on vehicles that have been converted to use Nissan 200SX S13 (240SX in USA) front knuckles... They should fit Nissan Skyline (R31), Nissan Leopard (F31) and Nissan 200 SX (S12). As these cars have been proven to convert and use 200SX S13 knuckles. As for the rear top hat/spacer, it should fit Nissan Skyline (R31), Nissan Leopard (F31) And Datsun 280ZX (S130) if you are using 200SX S13 (240SX in USA) rear coilovers.

When it is all said and done, I hope owners of the cars mentioned above will purchase your parts. Good luck.


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 Post subject: Re: S13 coilovers into DR30 - kit
PostPosted: Wed Apr 23, 2014 1:50 pm 
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Joined: Mon Feb 13, 2012 7:06 pm
Posts: 40
Location: San Francisco, CA
I'd definitely pick up your kit. Let me know when you have it ready.

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 Post subject: Re: S13 coilovers into DR30 - kit
PostPosted: Wed May 14, 2014 7:15 pm 

Joined: Fri Apr 04, 2014 2:14 pm
Posts: 11
Well the fronts will probably only fit the R30 Skyline - the extra length tie rod end required, but as you mentions the rears could fit a host of cars. If they are a success I'll look to produce more.

Here is one of the production tie rod ends - this replaces the existing R30 tie rod end, takes a spherical bearing, then a shank goes through it that can be adjusted with shims to dial out bump steer.

More photos and updates to follow.

Image

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 Post subject: Re: S13 coilovers into DR30 - kit
PostPosted: Fri May 16, 2014 3:53 am 

Joined: Thu May 01, 2008 4:07 am
Posts: 314
Location: South Australia
I would be interested in purchasing a kit when they are ready.

Looks like I'll be going coilovers again to do a brake upgrade... Atleast the struts I bought off you awhile back will come in handy if I'm ever defected ;)

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 Post subject: Re: S13 coilovers into DR30 - kit
PostPosted: Mon May 26, 2014 9:01 pm 
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Joined: Tue Jun 10, 2008 3:55 pm
Posts: 406
Location: Auckland, New Zealand
Interesting. I wonder if this would pass LVV certification in New Zealand. Might need to get a certifier I know to have a look at this thread.

This setup would go well in my DR30 sedan.

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 Post subject: Re: S13 coilovers into DR30 - kit
PostPosted: Wed May 28, 2014 10:14 pm 

Joined: Fri Apr 04, 2014 2:14 pm
Posts: 11
The kits have arrived. Just waiting on bearings and cir-clips. So far so good though. Should have them fitted and ready in the next week or so.

Image
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 Post subject: Re: S13 coilovers into DR30 - kit
PostPosted: Fri May 30, 2014 1:37 pm 
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Joined: Mon Feb 13, 2012 7:06 pm
Posts: 40
Location: San Francisco, CA
Do you have pricing info?

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 Post subject: Re: S13 coilovers into DR30 - kit
PostPosted: Fri May 30, 2014 10:58 pm 

Joined: Mon Jun 09, 2008 11:07 pm
Posts: 171
interesting i have s13 gear in mine, and im not lowered to the extreme you guys go with so my LCA's and steering arms are sitting level, but this is very interesting


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 Post subject: Re: S13 coilovers into DR30 - kit
PostPosted: Fri Jun 06, 2014 8:13 pm 

Joined: Fri Apr 04, 2014 2:14 pm
Posts: 11
If you have S13 gear, you will definitely have bump steer issues. No matter what it might appear to look by eye, your car will have the same issues!

Good news, I have trial fitted the kit and there is plenty of adjustment in there. Next up will be getting the proper alignment done so I can advise everyone which spacers go where.

Image

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 Post subject: Re: S13 coilovers into DR30 - kit
PostPosted: Fri Jun 06, 2014 9:06 pm 

Joined: Wed Sep 26, 2007 9:04 am
Posts: 501
Location: Grass valley , CA
This picture is with the arm under load? That looks like it will work. The bump steer is the one reason I have stayed away from the s13 stuff on my car. This could change things.


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 Post subject: Re: S13 coilovers into DR30 - kit
PostPosted: Tue Jun 17, 2014 8:58 pm 
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Joined: Sat Mar 10, 2012 9:09 pm
Posts: 31
Location: Las Vegas
Can't wait to order one once it's perfected. I'm in need of this since mine is blown and can't find any alternative interchangeable nissan that is available in U.S


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 Post subject: Re: S13 coilovers into DR30 - kit
PostPosted: Fri Jun 20, 2014 7:53 pm 

Joined: Fri Apr 04, 2014 2:14 pm
Posts: 11
Finally got the rears fitted today. So glad it all just works. Such a relief!

I'm now going to finalise the order for the motorsport spec bearings (unlike other kits on the market, they will use proper motorsport/aircraft spec bearings which have much tighter tolerances. I have used the highest quality materials in this design so no point skimping there either. Will add a bit more cost but it's well worth it.

Image

Much more height available now - with the standard S13 rear struts at full extension they were well below normal DR30 ride height. With these you can now get a standard ride height without having to be at full extension meaning the car will ride a heap better.

Image
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 Post subject: Re: S13 coilovers into DR30 - kit
PostPosted: Fri Jun 20, 2014 9:12 pm 

Joined: Wed Sep 26, 2007 9:04 am
Posts: 501
Location: Grass valley , CA
Keep us posted for pricing.


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 Post subject: Re: S13 coilovers into DR30 - kit
PostPosted: Sun Jun 22, 2014 2:43 am 

Joined: Mon Jun 09, 2008 11:07 pm
Posts: 171
This is very interesting, Definitely would like to get the rear adapters. I re-drilled my top to suit 2 stud. Im unsure on how the front tie rod setup will be in the legal lvta certification here. But could be a goer in the end


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 Post subject: Re: S13 coilovers into DR30 - kit
PostPosted: Mon Jun 23, 2014 3:19 am 
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Joined: Tue Jun 10, 2008 3:55 pm
Posts: 406
Location: Auckland, New Zealand
Yup I'm definitely still interested as well.

As Nick said, there may be some LVV certification issues with the front setup. If you have any schematics I can pass on to a certifier that would be great!

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 Post subject: Re: S13 coilovers into DR30 - kit
PostPosted: Tue Jun 24, 2014 1:32 am 

Joined: Mon Jun 09, 2008 11:07 pm
Posts: 171
I could post up on the lvvta site to check ?


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